Configuration USB 3G/HSDPA or CDMA/EVDO on Ubuntu

I often hear / read about the users of Ubuntu who complains about how to use a 3G/HSDPA USB modem or CDMA / EVDO in Ubuntu, especially on Facebook Page Community Ubuntu Indonesia. In this paper, I will try to help by giving general guidelines on how to configure a USB 3G/HSDPA modem or CDMA / EVDO in Ubuntu.
Before you begin, it helps you see a list of modem devices that have been tested by other Ubuntu users. Maybe there is a special configuration required by the device to your USB modem in there.
The following guide is my attempt at Ubuntu 10.04 Lucid Lynx uses a USB 3G/HSDPA modem provider Sierra 885 with Three / Tri and EVDO ZTE AC2726 USB modem with the provider Smart Telecom. (Caution: I am not a member of the Three marketing and Smart ^ ^)
NOTE: I am not responsible if any damage and / or loss of data on the modem and your system, and a soaring mobile phone bills or your credit runs out due to follow these guidelines.
First, do not plug your USB modem device first. Install the package usb-modeswitch first. What is a usb-modeswitch? At the USB modem 3G/HSDPA/CDMA/EVDO released lately, there are 2 modes in the device, namely ZeroCD (usually containing drivers and installation guide on Windows) and a modem. ZeroCD mode typically used by vendors to incorporate support applications (such as Sierra Wireless Watcher on brand Sierra USB modem), digital manuals, etc.. If you ever try plugging your USB modem on Windows-based systems, usually will appear a new drive, which is recognized as CD-ROM drive. ZeroCD is used by vendors to reduce distribution costs do not include a modem with driver CD, because all firmware and drivers are already loaded in the modem itself.
Well, when you plug in your USB modem in Ubuntu (or other Linux distros), then the mode is automatically activated ZeroCD mode. This is what usually causes the USB modem you usually can not directly be used in Ubuntu. By installing the usb-modeswitch, Ubuntu will enable modem functionality to your USB modem. with the entrance to the terminal (via the menu Applications | Accessories | Terminal) and enter the following command:
sudo apt-get install usb-modeswitch
After the installation is finished, now you can try to plug in your USB modem device. After that, enter the following command in a terminal:
lsusb

Is the device you written there? If yes, now you just click on the Network Manager icon in the upper right, select "New Mobile Broadband (GSM / CDMA) connection ...".

Select this menu to start the modem configuration
Later will come the USB modem configuration wizard as follows:

Views mobile broadband modem configuration wizard

Choose INDONESIA

Options cellular provider

If the provider you are using is listed in the list, please directly select that provider. I myself use the card Three / Three that is not on the list, so I decided to fill it manually.

Fill in the APN manuallyI used a package of Internet Monthly 3data Three with the APN settings (can be seen here). If you use another provider, please adjust the APN configuration is given in accordance with your provider.

Confirmation for the USB modem configurationAfter you click "Apply" on view at the top of this, Ubuntu will try to open a connection to the APN. Since you have not entered a username and password settings for data services, you should "break" connection first by left-click on Network Manager icon and select "Disconnect".

Disconnect the first connectionAfter that, right click on Network Manager icon and select "Edit Connections ...". Select Mobile Broadband tab, then select the configuration provider before you enter, then click "Edit". You will be taken into account your provider's configuration screen. In the Internet settings Monthly Three, I fill in the username and password 3data. After that click "Apply" then "Close

Configuring the data service provider's account
Now is the time try to connect 3G/HSDPA or CDMA / EVDO through your USB modem. Left-click on Network Manager icon and select your provider configuration on the Mobile Broadband. Happy surfing the Internet with your broadband USB modem! ^ ^

ADDITIONAL TIPS

Guide above is about how the installation or initial configuration your USB modem. For further usage, here are the steps to use your USB modem:          1.Plug in your USB modem.      
          2.Right-click on Network Manager icon and select "Enable Mobile Broadband".

1. 
   Select Enable to activate the Mobile Broadband modem
   If this option still does not appear, open the terminal and then type "lsusb" and wait several seconds (up to 1 minute), then try again right click on Network Manager icon and see if the option is there. Repeat this step until the "Enable Mobile Broadband" appears and select the menu
   3.Klik left on Network Manager icon and select the provider that you have configured.
2. 
   Choose a provider that has been configured
   4.Wait a while until a notification that the system is already connected to success. If the connection fails, repeat again from step 3.
   5.Happy surfing with your broadband USB modem!